(Sorry, forgot to CC www-svg.)
Forwarded message 1
Erik Dahlström wrote:
>
> Dear CSS WG,
>
> This is a last call comment from the SVG WG on the CSS Namespaces
> Module, W3C Working Draft 15 February 2008,
> http://www.w3.org/TR/2008/WD-css3-namespace-20080215/. Please let us
> know if you have any questions by CC:ing your responses to www-svg@w3.org.
>
>> Any @namespace rules must follow all @charset and @import rules and
>> precede all other non-ignored at-rules and rule sets in a style
>> sheet
>
> Why? What benefit does that provide?
David Baron explained the reasoning behind this placement in
http://lists.w3.org/Archives/Public/www-style/2008Mar/0133.html
> What if you want to later define an important @-rule and want it to be
> 'right after' @charset?
Then the spec that defines that @-rule will need to specify its placement
with respect to the @namespace rule and clarify that this rule not cause
any later @namespace rules to be considered invalid.
> Preceding all 'non-ignored' @rules seems rather odd, too. It makes a
> stylesheet move from valid to invalid
This is a forward-compatible parsing requirement to allow for a new @-rule
to be placed before @namespace. With this requirement, if a later spec
introduces such a rule, UAs compatible with the current spec will ignore it
rather than treating the @namespace rule as invalid.
> Suggestion: Simply state that @namespace rules must precede any rules
> that use namespaces.
Rejected for reasons stated above. Please let me know if this is acceptable
or if I should register this as a Formal Objection.
~fantasai